Matter

Is this balanced?
2HgO → 2Hg + O₂

• Yes

• No

Tags

NGSS.MS-PS1-5

Some clues of a chemical change include..

• Melting, Breaking, Crushing

• Bending,Boiling, Foaming

• Evaporating, Cutting, production of heat

• Fizzing, Foaming, Change in color

Tags

NGSS.MS-PS1-2

The three main regions on the periodic table are ____________.

• solid, liquid, gas

• metals, nonmetals, meatlloids

• radioactive, man-made, poisonous

A "group" is a ____________ on the periodic table.

• column

• row

A "period" is a ____________ on the periodic table.

• column

• row

This picture represents which of the following?

• element

• compound

• mixture of elements

• mixture of compounds

Tags

NGSS.MS-PS1-1

Bubbles form when two or more substances are combined ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

An element is a pure substance that can't be separated into anything more simpler by physical or chemical means. Gold is an element because it only contains gold atoms. Water is not an element because it contains hydrogen and oxygen atoms.
Gold is an element because it only contains gold atoms.
True or False?

• True

• False

Tags

NGSS.MS-PS1-1

What elements are in Nacl

• Borium

• Chlorine

• Uranium

• Sodium

Tags

NGSS.MS-PS1-1